Scheduling resources for multiple transmission configuration indicator states in multiple transmission time intervals using single downlink control information

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive single downlink control information (DCI) that indicates resources for a plurality of transmission configuration indicator (TCI) states for transmitting or receiving communications in a plurality of transmission time intervals (TTIs). The UE may transmit or receive the communications in the plurality of TTIs in accordance with the DCI. Numerous other aspects are provided.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Patent Application is a continuation of U.S. patent applicationSer. No. 17/093,466, filed Nov. 9, 2020, entitled “SCHEDULING RESOURCESFOR MULTIPLE TRANSMISSION CONFIGURATION INDICATOR STATES IN MULTIPLETRANSMISSION TIME INTERVALS USING SINGLE DOWNLINK CONTROL INFORMATION,”which claims priority to U.S. Provisional Patent Application No.62/936,233, filed on Nov. 15, 2019, entitled “SCHEDULING RESOURCES FORMULTIPLE TRANSMISSION CONFIGURATION INDICATOR STATES IN MULTIPLETRANSMISSION TIME INTERVALS USING SINGLE DOWNLINK CONTROL INFORMATION,”and assigned to the assignee hereof. The contents of which areincorporated herein by reference in their entireties.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and specifically, to techniques and apparatuses forscheduling resources for multiple transmission configuration indicator(TCI) states in multiple transmission time intervals (TTIs) using singledownlink control information (DCI).

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (for example,bandwidth, or transmit power, among other examples, or a combinationthereof). Examples of such multiple-access technologies include codedivision multiple access (CDMA) systems, time division multiple access(TDMA) systems, frequency-division multiple access (FDMA) systems,orthogonal frequency-division multiple access (OFDMA) systems,single-carrier frequency-division multiple access (SC-FDMA) systems,time division synchronous code division multiple access (TD-SCDMA)systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set ofenhancements to the Universal Mobile Telecommunications System (UMTS)mobile standard promulgated by the Third Generation Partnership Project(3GPP).

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipments (UEs) to communicate on a municipal, national,regional, and even global level. New Radio (NR), which may also bereferred to as 5G, is a set of enhancements to the LTE mobile standardpromulgated by the 3GPP. NR is designed to better support mobilebroadband Internet access by improving spectral efficiency, loweringcosts, improving services, making use of new spectrum, and betterintegrating with other open standards using orthogonal frequencydivision multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on thedownlink (DL), using CP-OFDM or SC-FDMA (for example, also known asdiscrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL),as well as supporting beamforming, multiple-input multiple-output (MIMO)antenna technology, and carrier aggregation. However, as the demand formobile broadband access continues to increase, there exists a need forfurther improvements in LTE and NR technologies. Preferably, theseimprovements are applicable to other multiple access technologies andthe telecommunication standards that employ these technologies.

In some wireless communication systems, communications associated with aUE may be scheduled in multiple transmission time intervals (TTIs) byrespective separate downlink control information (DCI). Moreover, insome examples, each DCI may indicate a respective transmissionconfiguration indicator (TCI) state associated with a beam that the UEis to use for a communication. However, in such examples, transmissionof multiple DCIs to the UE is inefficient and may increase controlcommunication overhead on the wireless communication system as well asincrease the UE's control monitoring overhead.

SUMMARY

In some aspects, a method of wireless communication, performed by a userequipment (UE), may include receiving single downlink controlinformation (DCI) that indicates resources for a plurality oftransmission configuration indicator (TCI) states for transmitting orreceiving communications in a plurality of transmission time intervals(TTIs). The method may include transmitting or receiving thecommunications in the plurality of TTIs in accordance with the DCI.

In some aspects, a method of wireless communication, performed by a basestation, may include determining, for a UE, resources for a plurality ofTCI states for transmitting or receiving communications in a pluralityof TTIs. The method may include transmitting, to the UE, single DCI thatindicates the resources for the plurality of TCI states.

In some aspects, a UE for wireless communication may include memory andone or more processors operatively coupled to the memory. The memory andthe one or more processors may be configured to receive single DCI thatindicates resources for a plurality of TCI states for transmitting orreceiving communications in a plurality of TTIs. The memory and the oneor more processors may be configured to transmit or receive thecommunications in the plurality of TTIs in accordance with the DCI.

In some aspects, a base station for wireless communication may includememory and one or more processors operatively coupled to the memory. Thememory and the one or more processors may be configured to determine,for a UE, resources for a plurality of TCI states for transmitting orreceiving communications in a plurality of TTIs. The memory and the oneor more processors may be configured to transmit, to the UE, single DCIthat indicates the resources for the plurality of TCI states.

In some aspects, a non-transitory computer-readable medium may store oneor more instructions for wireless communication. The one or moreinstructions, when executed by one or more processors of a UE, may causethe one or more processors to receive single DCI that indicatesresources for a plurality of TCI states for transmitting or receivingcommunications in a plurality of TTIs. The one or more instructions,when executed by one or more processors of the UE, may cause the one ormore processors to transmit or receive the communications in theplurality of TTIs in accordance with the DCI.

In some aspects, a non-transitory computer-readable medium may store oneor more instructions for wireless communication. The one or moreinstructions, when executed by one or more processors of a base station,may cause the one or more processors to determine, for a UE, resourcesfor a plurality of TCI states for transmitting or receivingcommunications in a plurality of TTIs. The one or more instructions,when executed by one or more processors of the base station, may causethe one or more processors to transmit, to the UE, single DCI thatindicates the resources for the plurality of TCI states.

In some aspects, an apparatus for wireless communication may includemeans for receiving single DCI that indicates resources for a pluralityof TCI states for transmitting or receiving communications in aplurality of TTIs. The apparatus may include means for transmitting orreceiving the communications in the plurality of TTIs in accordance withthe DCI.

In some aspects, an apparatus for wireless communication may includemeans for determining, for a UE, resources for a plurality of TCI statesfor transmitting or receiving communications in a plurality of TTIs. Theapparatus may include means for transmitting, to the UE, single DCI thatindicates the resources for the plurality of TCI states.

Aspects generally include a method, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, wireless communication device, or processing system assubstantially described with reference to and as illustrated by thedrawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples in accordance with the disclosure in order thatthe detailed description that follows may be better understood.Additional features and advantages will be described hereinafter. Theconception and specific examples disclosed may be readily utilized as abasis for modifying or designing other structures for carrying out thesame purposes of the present disclosure. Such equivalent constructionsdo not depart from the scope of the appended claims. Characteristics ofthe concepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only some typical aspects of this disclosure and aretherefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a diagram illustrating an example wireless network inaccordance with various aspects of the present disclosure.

FIG. 2 is a diagram illustrating an example base station (BS) incommunication with a user equipment (UE) in a wireless network inaccordance with various aspects of the present disclosure.

FIG. 3A is a diagram illustrating an example frame structure for use ina wireless network in accordance with various aspects of the presentdisclosure.

FIG. 3B is a diagram illustrating an example synchronizationcommunication hierarchy for use in a wireless communication network inaccordance with various aspects of the present disclosure.

FIG. 4 is a diagram illustrating an example slot format in accordancewith various aspects of the present disclosure.

FIG. 5 is a diagram illustrating an example logical architecture of adistributed radio access network (RAN) in accordance with variousaspects of the present disclosure.

FIG. 6 is a diagram illustrating an example physical architecture of adistributed RAN in accordance with various aspects of the presentdisclosure.

FIG. 7 is a diagram illustrating an example of scheduling resources formultiple transmission configuration indicator (TCI) states in multipletransmission time intervals (TTIs) using single downlink controlinformation (DCI) in accordance with various aspects of the presentdisclosure.

FIGS. 8A-8H are diagrams illustrating examples of scheduling resourcesfor multiple TCI states in multiple TTIs using single DCI in accordancewith various aspects of the present disclosure.

FIG. 9 is a flowchart illustrating an example process performed by a UEin accordance with various aspects of the present disclosure.

FIG. 10 is a flowchart illustrating an example process performed by a BSin accordance with various aspects of the present disclosure.

FIGS. 11-12 are diagrams illustrating example apparatuses for wirelesscommunication in accordance with various aspects of the presentdisclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and are not to be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based on theteachings herein one skilled in the art may appreciate that the scope ofthe disclosure is intended to cover any aspect of the disclosuredisclosed herein, whether implemented independently of or combined withany other aspect of the disclosure. For example, an apparatus may beimplemented or a method may be practiced using any quantity of theaspects set forth herein. In addition, the scope of the disclosure isintended to cover such an apparatus or method which is practiced usingother structure, functionality, or structure and functionality inaddition to or other than the various aspects of the disclosure setforth herein. Any aspect of the disclosure disclosed herein may beembodied by one or more elements of a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, or algorithms, among otherexamples, or combinations thereof (collectively referred to as“elements”). These elements may be implemented using hardware, software,or combinations thereof. Whether such elements are implemented ashardware or software depends upon the particular application and designconstraints imposed on the overall system.

In some wireless communication systems, communications associated with auser equipment (UE) may be scheduled in multiple transmission timeintervals (TTIs) by respective separate downlink control information(DCI). Moreover, in some examples, each DCI may indicate a respectivetransmission configuration indicator (TCI) state associated with a beamthat the UE is to use for a communication. For example, first DCI mayschedule a first communication in a first TTI using a first beam, secondDCI may schedule a second communication in a second TTI using a secondbeam, and so forth. However, in such examples, transmission of multipleDCIs to the UE is inefficient and may increase control communicationoverhead on the wireless communication system as well as increase theUE's control monitoring overhead.

Various aspects relate generally to the efficient scheduling ofresources for multiple TCIs in multiple TTIs. Some aspects morespecifically relate to the use of single DCI to indicate resources, orother control information, for multiple TCI states for transmitting orreceiving communications in the multiple TTIs. In some aspects, a timedomain resource assignment or a frequency domain resource assignment ofthe resources may be common to one or more of the multiple TCI states.For example, the single DCI may indicate a set of common resources orcontrol information that are to be shared by the multiple TCI states,and may indicate respective sets of resources or control information foreach TCI state that are not common to the TCI states. In some aspects,the resources or control information indicated by the single DCI arebased at least in part on whether a UE is enabled to concurrentlycommunicate using multiple TCI states.

Particular aspects of the subject matter described in this disclosurecan be implemented to realize one or more of the following potentialadvantages. In some examples, the described techniques can be used toschedule multiple TTIs (for example, slots) using single DCI to therebyreduce control communication overhead as well as decrease controlmonitoring overhead. Accordingly, use of the single DCI may provideefficient signaling of resource assignments in the multiple TTIs,thereby enabling efficient operation in higher-frequency bands that usea higher subcarrier spacing and smaller slot and symbol durations.Moreover, use of the single DCI may provide efficient signaling ofmultiple TCI states to a UE capable of processing multiple TCI statessimultaneously (for example, a UE equipped with multiple antenna panels,or a UE that is to receive non-coherent joint transmissions frommultiple transmit receive points (TRPs)).

FIG. 1 is a diagram illustrating an example wireless network inaccordance with various aspects of the present disclosure. The wirelessnetwork may be a Long Term Evolution (LTE) network or some otherwireless network, such as a 5G or NR network. The wireless network mayinclude a quantity of base stations (BSs) 110 (shown as BS 110 a, BS 110b, BS 110 c, and BS 110 d) and other network entities. A BS is an entitythat communicates with UE(s) and may also be referred to as a Node B, aneNodeB, an eNB, a gNB, a NR BS, a 5G node B (NB), an access point (AP),or a TRP, among other examples, or combinations thereof (these terms areused interchangeably herein). Each BS may provide communication coveragefor a particular geographic area. In 3GPP, the term “cell” can refer toa coverage area of a BS or a BS subsystem serving this coverage area,depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, or another type of cell. A macro cell may cover a relativelylarge geographic area (for example, several kilometers in radius) andmay allow unrestricted access by UEs with service subscription. A picocell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (for example, a home) and mayallow restricted access by UEs having association with the femto cell(for example, UEs in a closed subscriber group (CSG)). A BS for a macrocell may be referred to as a macro BS. A BS for a pico cell may bereferred to as a pico BS. A BS for a femto cell may be referred to as afemto BS or a home BS. A BS may support one or multiple (for example,three) cells.

The wireless network may be a heterogeneous network that includes BSs ofdifferent types, for example, macro BSs, pico BSs, femto BSs, or relayBSs, among other examples, or combinations thereof. These differenttypes of BSs may have different transmit power levels, differentcoverage areas, and different impacts on interference in the wirelessnetwork. For example, macro BSs may have a high transmit power level(for example, 5 to 40 watts) whereas pico BSs, femto BSs, and relay BSsmay have lower transmit power levels (for example, 0.1 to 2 watts). Inthe example shown in FIG. 1 , a BS 110 a may be a macro BS for a macrocell 102 a, a BS 110 b may be a pico BS for a pico cell 102 b, and a BS110 c may be a femto BS for a femto cell 102 c. A network controller 130may couple to the set of BSs 102 a, 102 b, 110 a and 110 b, and mayprovide coordination and control for these BSs. Network controller 130may communicate with the BSs via a backhaul. The BSs may alsocommunicate with one another, for example, directly or indirectly via awireless or wireline backhaul.

In some examples, a cell may not be stationary, rather, the geographicarea of the cell may move in accordance with the location of a mobileBS. In some examples, the BSs may be interconnected to one another or toone or more other BSs or network nodes (not shown) in the wirelessnetwork through various types of backhaul interfaces such as a directphysical connection, or a virtual network, among other examples, orcombinations thereof using any suitable transport network.

The wireless network may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (for example, a BS or a UE) and send a transmission of the datato a downstream station (for example, a UE or a BS). A relay station mayalso be a UE that can relay transmissions for other UEs. In the exampleshown in FIG. 1 , a relay base station 110 d may communicate with macroBS 110 a and a UE 120 d in order to facilitate communication between BS110 a and UE 120 d. A relay base station may also be referred to as arelay BS, a relay station, or a relay, among other examples, orcombinations thereof.

UEs 120 (for example, 120 a, 120 b, 120 c) may be dispersed throughoutthe wireless network, and each UE may be stationary or mobile. A UE mayalso be referred to as an access terminal, a terminal, a mobile station,a subscriber unit, or a station, among other examples, or combinationsthereof. A UE may be a cellular phone (for example, a smart phone), apersonal digital assistant (PDA), a wireless modem, a wirelesscommunication device, a handheld device, a laptop computer, a cordlessphone, a wireless local loop (WLL) station, a tablet, a camera, a gamingdevice, a netbook, a smartbook, an ultrabook, a medical device orequipment, biometric sensors/devices, wearable devices (smart watches,smart clothing, smart glasses, smart wrist bands, smart jewelry (forexample, smart ring, smart bracelet)), an entertainment device (forexample, a music or video device, or a satellite radio), a vehicularcomponent or sensor, smart meters/sensors, industrial manufacturingequipment, a global positioning system device, or any other suitabledevice that is configured to communicate via a wireless medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors or location tags, among other examples, or combinationsthereof, that may communicate with a base station, another device (forexample, remote device), or some other entity. A wireless node mayprovide, for example, connectivity for or to a network (for example, awide area network such as Internet or a cellular network) via a wired orwireless communication link. Some UEs may be consideredInternet-of-Things (IoT) devices, or may be implemented as NB-IoT(narrowband internet of things) devices. Some UEs may be considered aCustomer Premises Equipment (CPE). UE 120 may be included inside ahousing that houses components of UE 120, such as processor components,or memory components, among other examples, or combinations thereof.

In general, any quantity of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular radioaccess technology (RAT) and may operate on one or more frequencies orfrequency channels. A frequency may also be referred to as a carrieramong other examples. Each frequency may support a single RAT in a givengeographic area in order to avoid interference between wireless networksof different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some examples, two or more UEs 120 (for example, shown as UE 120 aand UE 120 e) may communicate directly with one another using one ormore sidelink channels (for example, without using a base station 110 asan intermediary). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (for example,which may include a vehicle-to-vehicle (V2V) protocol, or avehicle-to-infrastructure (V2I) protocol, among other examples, orcombinations thereof), or a mesh network, among other examples, orcombinations thereof. In such examples, the UE 120 may performscheduling operations, resource selection operations, or otheroperations described elsewhere herein as being performed by the basestation 110.

FIG. 2 is a diagram illustrating an example BS in communication with aUE in a wireless network in accordance with various aspects of thepresent disclosure. Base station 110 may be equipped with T antennas 234a through 234 t, and UE 120 may be equipped with R antennas 252 athrough 252 r, where in general T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCSs) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (for example,encode) the data for each UE based at least in part on the MCS(s)selected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (for example, forsemi-static resource partitioning information (SRPI) among otherexamples) and control information (for example, CQI requests, grants, orupper layer signaling, among other examples, or combinations thereof)and provide overhead symbols and control symbols. Transmit processor 220may also generate reference symbols for reference signals (for example,the cell-specific reference signal (CRS)) and synchronization signals(for example, the primary synchronization signal (PSS) and secondarysynchronization signal (SSS)). A transmit (TX) multiple-inputmultiple-output (MIMO) processor 230 may perform spatial processing (forexample, precoding) on the data symbols, the control symbols, theoverhead symbols, or the reference symbols, if applicable, and mayprovide T output symbol streams to T modulators (MODs) 232 a through 232t. Each MOD 232 may process a respective output symbol stream (forexample, for OFDM among other examples) to obtain an output samplestream. Each MOD 232 may further process (for example, convert toanalog, amplify, filter, and upconvert) the output sample stream toobtain a downlink signal. T downlink signals from MODs 232 a through 232t may be transmitted via T antennas 234 a through 234 t, respectively.In accordance with various aspects described in more detail below, thesynchronization signals can be generated with location encoding toconvey additional information.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 or other base stations and may provide receivedsignals to R demodulators (DEMODs) 254 a through 254 r, respectively.Each DEMOD 254 may condition (for example, filter, amplify, downconvert,and digitize) a received signal to obtain input samples. Each DEMOD 254may further process the input samples (for example, for OFDM) to obtainreceived symbols. A MIMO detector 256 may obtain received symbols fromall R DEMODs 254 a through 254 r, perform MIMO detection on the receivedsymbols if applicable, and provide detected symbols. A receive processor258 may process (for example, decode) the detected symbols, providedecoded data for UE 120 to a data sink 260, and provide decoded controlinformation and system information to a controller/processor 280. Achannel processor may determine a reference signal received power(RSRP), a received signal strength indicator (RSSI), a reference signalreceived quality (RSRQ), or a channel quality indicator (CQI), amongother examples, or combinations thereof. In some examples, one or morecomponents of UE 120 may be included in a housing.

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 as well as control information (forexample, for reports including RSRP, RSSI, RSRQ, or CQI, among otherexamples, or combinations thereof) from controller/processor 280.Transmit processor 264 may also generate reference symbols for one ormore reference signals. The symbols from transmit processor 264 may beprecoded by a TX MIMO processor 266 if applicable, further processed byMODs 254 a through 254 r (for example, for discrete Fourier transformspread orthogonal frequency division multiplexing (DFT-s-OFDM), ororthogonal frequency division multiplexing (OFDM) with a cyclic prefix(CP) (CP-OFDM), among other examples, or combinations thereof), andtransmitted to base station 110. At base station 110, the uplink signalsfrom UE 120 and other UEs may be received by antennas 234, processed byDEMODs 232, detected by a MIMO detector 236 if applicable, and furtherprocessed by a receive processor 238 to obtain decoded data and controlinformation sent by UE 120. Receive processor 238 may provide thedecoded data to a data sink 239 and the decoded control information tocontroller/processor 240. Base station 110 may include communicationunit 244 and communicate to network controller 130 via communicationunit 244. Network controller 130 may include communication unit 294,controller/processor 290, and memory 292.

Controller/processor 240 of base station 110, controller/processor 280of UE 120, or any other component(s) of FIG. 2 may perform one or moretechniques associated with scheduling resources for multiple TCI statesin multiple TTIs using single DCI, as described in more detail elsewhereherein. For example, controller/processor 240 of base station 110,controller/processor 280 of UE 120, or any other component(s) of FIG. 2may perform or direct operations of, for example, process 900 of FIG. 9, process 1000 of FIG. 10 , or other processes as described herein.Memories 242 and 282 may store data and program codes for base station110 and UE 120, respectively. A scheduler 246 may schedule UEs for datatransmission on the downlink or uplink.

In some aspects, UE 120 may include means for receiving single DCI thatindicates resources for a plurality of TCI states for transmitting orreceiving communications in a plurality of TTIs, means for transmittingor receiving the communications in the plurality of TTIs in accordancewith the DCI, among other examples, or combinations thereof. In someaspects, such means may include one or more components of UE 120described in connection with FIG. 2 .

In some aspects, base station 110 may include means for determining, fora UE, resources for a plurality of TCI states for transmitting orreceiving communications in a plurality of TTIs, means for transmitting,to the UE, single DCI that indicates the resources for the plurality ofTCI states, among other examples, or combinations thereof. In someaspects, such means may include one or more components of base station110 described in connection with FIG. 2 .

FIG. 3A is a diagram illustrating an example frame structure for use ina wireless network in accordance with various aspects of the presentdisclosure. For example, the frame structure may be used for frequencydivision duplexing (FDD) in a telecommunications system (for example,NR). The transmission timeline for each of the downlink and uplinkdirections may be partitioned into units of radio frames (sometimesreferred to simply as “frames”). Each radio frame may have apredetermined duration (for example, 10 milliseconds (ms)) and may bepartitioned into a set of Z (Z≥1) subframes (for example, with indicesof 0 through Z−1). Each subframe may have a predetermined duration (forexample, 1 ms) and may include a set of slots (for example, 2^(m) slotsper subframe are shown in FIG. 3A, where m is numerology used for atransmission, such as 0, 1, 2, 3, 4, among other examples, orcombinations thereof). Each slot may include a set of L symbol periods.For example, each slot may include fourteen symbol periods (for example,as shown in FIG. 3A), seven symbol periods, or another quantity ofsymbol periods. In a case where the subframe includes two slots (forexample, when m=1), the subframe may include 2L symbol periods, wherethe 2L symbol periods in each subframe may be assigned indices of 0through 2L−1. In some examples, a scheduling unit for the FDD may beframe-based, subframe-based, slot-based, or symbol-based, among otherexamples, or combinations thereof.

While some techniques are described herein in connection with frames,subframes, or slots, among other examples, or combinations thereof,these techniques may equally apply to other types of wirelesscommunication structures, which may be referred to using terms otherthan “frame,” “subframe,” “slot,” among other examples, or combinationsthereof in 5G NR. In some examples, “wireless communication structure”may refer to a periodic time-bounded communication unit defined by awireless communication standard or protocol. Additionally oralternatively, different configurations of wireless communicationstructures than those shown in FIG. 3A may be used.

In some telecommunications (for example, NR), a base station maytransmit synchronization signals. For example, a base station maytransmit a primary synchronization signal (PSS), a secondarysynchronization signal (SSS), among other examples, or combinationsthereof, on the downlink for each cell supported by the base station.The PSS and SSS may be used by UEs for cell search and acquisition. Forexample, the PSS may be used by UEs to determine symbol timing, and theSSS may be used by UEs to determine a physical cell identifier,associated with the base station, and frame timing. The base station mayalso transmit a physical broadcast channel (PBCH). The PBCH may carrysome system information, such as system information that supportsinitial access by UEs.

In some examples, the base station may transmit the PSS, the SSS, or thePBCH in accordance with a synchronization communication hierarchy (forexample, a synchronization signal (SS) hierarchy) including multiplesynchronization communications (for example, SS blocks), as describedbelow in connection with FIG. 3B.

FIG. 3B is a diagram illustrating an example synchronizationcommunication hierarchy for use in a wireless communication network inaccordance with various aspects of the present disclosure. The SShierarchy, which is an example of a synchronization communicationhierarchy. As shown in FIG. 3B, the SS hierarchy may include an SS burstset, which may include a plurality of SS bursts (identified as SS burst0 through SS burst B−1, where B is a maximum quantity of repetitions ofthe SS burst that may be transmitted by the base station). As furthershown, each SS burst may include one or more SS blocks (identified as SSblock 0 through SS block (b_(max_SS-1)), where b_(max_SS-1) is a maximumquantity of SS blocks that can be carried by an SS burst). In someexamples, different SS blocks may be beam-formed differently. An SSburst set may be periodically transmitted by a wireless node, such asevery X milliseconds, as shown in FIG. 3B. In some examples, an SS burstset may have a fixed or dynamic length, shown as Y milliseconds in FIG.3B.

The SS burst set shown in FIG. 3B is an example of a synchronizationcommunication set, and other synchronization communication sets may beused in connection with the techniques described herein. Furthermore,the SS block shown in FIG. 3B is an example of a synchronizationcommunication, and other synchronization communications may be used inconnection with the techniques described herein.

In some examples, an SS block includes resources that carry the PSS, theSSS, the PBCH, or other synchronization signals (for example, a tertiarysynchronization signal (TSS)) or synchronization channels. In someexamples, multiple SS blocks are included in an SS burst, and the PSS,the SSS, or the PBCH may be the same across each SS block of the SSburst. In some examples, a single SS block may be included in an SSburst. In some examples, the SS block may be at least four symbolperiods in length, where each symbol carries one or more of the PSS (forexample, occupying one symbol), the SSS (for example, occupying onesymbol), or the PBCH (for example, occupying two symbols).

In some examples, the symbols of an SS block are consecutive, as shownin FIG. 3B. In some examples, the symbols of an SS block arenon-consecutive. Similarly, in some examples, one or more SS blocks ofthe SS burst may be transmitted in consecutive radio resources (forexample, consecutive symbol periods) during one or more slots.Additionally or alternatively, one or more SS blocks of the SS burst maybe transmitted in non-consecutive radio resources.

In some examples, the SS bursts may have a burst period during which theSS blocks of the SS burst are transmitted by the base station inaccordance with the burst period. In other words, the SS blocks may berepeated during each SS burst. In some examples, the SS burst set mayhave a burst set periodicity, and the SS bursts of the SS burst set aretransmitted by the base station in accordance with the fixed burst setperiodicity. In other words, the SS bursts may be repeated during eachSS burst set.

The base station may transmit system information, such as systeminformation blocks (SIBs) on a physical downlink shared channel (PDSCH)in some slots. The base station may transmit control information/data ona physical downlink control channel (PDCCH) in C symbol periods of aslot, where C may be configurable for each slot. The base station maytransmit traffic data or other data on the PDSCH in the remaining symbolperiods of each slot.

FIG. 4 is a diagram illustrating an example slot format in accordancewith various aspects of the present disclosure. The available timefrequency resources may be partitioned into resource blocks. Eachresource block may cover a set of subcarriers (for example, 12subcarriers) in one slot and may include a quantity of resourceelements. Each resource element may cover one subcarrier in one symbolperiod (for example, in time) and may be used to send one modulationsymbol, which may be a real or complex value.

An interlace structure may be used for each of the downlink and uplinkfor FDD in some telecommunications systems (for example, NR). Forexample, Q interlaces with indices of 0 through Q−1 may be defined,where Q may be equal to 4, 6, 8, 10, or some other value. Each interlacemay include slots that are spaced apart by Q frames. In particular,interlace q may include slots q, q+Q, q+2Q, etc., where q E {0, . . .Q−1}.

A UE may be located within the coverage of multiple BSs. One of theseBSs may be selected to serve the UE. The serving BS may be selectedbased at least in part on various criteria such as received signalstrength, received signal quality, or path loss, among other examples,or combinations thereof. Received signal quality may be quantified by asignal-to-noise-and-interference ratio (SNIR), or a reference signalreceived quality (RSRQ), or some other metric. The UE may operate in adominant interference scenario in which the UE may observe highinterference from one or more interfering BSs.

While aspects of the examples described herein may be associated with NRor 5G technologies, aspects of the present disclosure may be applicablewith other wireless communication systems. New Radio (NR) may refer toradios configured to operate in accordance with a new air interface (forexample, other than Orthogonal Frequency Divisional Multiple Access(OFDMA)-based air interfaces) or fixed transport layer (for example,other than Internet Protocol (IP)). In some examples, NR may utilizeOFDM with a cyclic prefix (CP) (herein referred to as cyclic prefix OFDMor CP-OFDM) or SC-FDM on the uplink, may utilize CP-OFDM on the downlinkand include support for half-duplex operation using time divisionduplexing (TDD). In some examples, NR may, for example, utilize OFDMwith a CP (herein referred to as CP-OFDM) or DFT-s-OFDM on the uplink,may utilize CP-OFDM on the downlink and include support for half-duplexoperation using TDD. NR may include Enhanced Mobile Broadband (eMBB)service targeting wide bandwidth (for example, 80 megahertz (MHz) andbeyond), millimeter wave (mmW) targeting high carrier frequency (forexample, 60 gigahertz (GHz)), massive MTC (mMTC) targeting non-backwardcompatible MTC techniques, or mission critical targeting ultra reliablelow latency communications (URLLC) service.

In some examples, a single component carrier bandwidth of 100 MHz may besupported. NR resource blocks may span 12 sub-carriers with asub-carrier bandwidth of 60 or 120 kilohertz (kHz) over a 0.1millisecond (ms) duration. Each radio frame may include 40 slots and mayhave a length of 10 ms. Consequently, each slot may have a length of0.25 ms. Each slot may indicate a link direction (for example, downlink(DL) or uplink (UL)) for data transmission and the link direction foreach slot may be dynamically switched. Each slot may include DL/UL dataas well as DL/UL control data.

Beamforming may be supported and beam direction may be dynamicallyconfigured. MIMO transmissions with precoding may also be supported.MIMO configurations in the DL may support up to 8 transmit antennas withmulti-layer DL transmissions up to 8 streams and up to 2 streams per UE.Aggregation of multiple cells may be supported with up to 8 servingcells. Alternatively, NR may support a different air interface, otherthan an OFDM-based interface. NR networks may include entities suchcentral units or distributed units.

FIG. 5 is a diagram illustrating an example logical architecture of adistributed radio access network (RAN) in accordance with variousaspects of the present disclosure. A 5G access node 506 may include anaccess node controller (ANC) 502. The ANC may be a central unit (CU) ofthe distributed RAN. The backhaul interface to the next generation corenetwork (NG-CN) 504 may terminate at the ANC. The backhaul interface toneighboring next generation access nodes (NG-ANs) 510 may terminate atthe ANC. The ANC may include one or more TRPs 508 (which may also bereferred to as BSs, NR BSs, Node Bs, 5G NBs, APs, gNB, or some otherterm). As described above, a TRP may be used interchangeably with“cell.”

The TRPs 508 may be a distributed unit (DU). The TRPs may be connectedto one ANC (ANC 502) or more than one ANC (not illustrated). Forexample, for RAN sharing, radio as a service (RaaS), and servicespecific AND deployments, the TRP may be connected to more than one ANC.A TRP may include one or more antenna ports. The TRPs may be configuredto individually (for example, dynamic selection) or jointly (forexample, joint transmission) serve traffic to a UE.

The local architecture of the RAN may be used to support fronthauldefinition. The architecture may be defined to support fronthaulingsolutions across different deployment types. For example, thearchitecture may be based at least in part on transmit networkcapabilities (for example, bandwidth, latency, or jitter).

The architecture may share features or components with LTE. In someexamples, NG-AN 510 may support dual connectivity with NR. NG-AN 510 mayshare a common fronthaul for LTE and NR.

The architecture may enable cooperation between and among TRPs 508. Forexample, cooperation may be preset within a TRP or across TRPs via theANC 502. In some examples, no inter-TRP interface may be needed/present.

In some examples, a dynamic configuration of split logical functions maybe present within the architecture of the RAN. The packet dataconvergence protocol (PDCP), radio link control (RLC), and MAC protocollayers may be adaptably placed at the ANC or TRP.

FIG. 6 is a diagram illustrating an example physical architecture of adistributed RAN in accordance with various aspects of the presentdisclosure. A centralized core network unit (C-CU) 602 may host corenetwork functions. The C-CU may be centrally deployed. C-CUfunctionality may be offloaded (for example, to advanced wirelessservices (AWS)), in an effort to handle peak capacity. A centralized RANunit (C-RU) 604 may host one or more ANC functions. Optionally, the C-RUmay host core network functions locally. The C-RU may have distributeddeployment. The C-RU may be closer to the network edge. A distributedunit (DU) 606 may host one or more TRPs. The DU may be located at edgesof the network with radio frequency (RF) functionality.

In some wireless communication systems, communications associated with aUE may be scheduled in multiple TTIs by respective separate DCI.Moreover, in some examples, each DCI may indicate a respective TCI stateassociated with a beam that the UE is to use for a communication. Forexample, first DCI may schedule a first communication in a first TTIusing a first beam, second DCI may schedule a second communication in asecond TTI using a second beam, and so forth. However, in such examples,transmission of multiple DCIs to the UE is inefficient and may increasecontrol communication overhead on the wireless communication system aswell as increase the UE's control monitoring overhead.

Various aspects relate generally to the efficient scheduling ofresources for multiple TCIs in multiple TTIs. Some aspects morespecifically relate to the use of single DCI to indicate resources, orother control information, for multiple TCI states for transmitting orreceiving communications in the multiple TTIs. In some aspects, a timedomain resource assignment or a frequency domain resource assignment ofthe resources may be common to one or more of the multiple TCI states.For example, the single DCI may indicate a set of common resources orcontrol information that are to be shared by the multiple TCI states,and may indicate respective sets of resources or control information foreach TCI state that are not common to the TCI states. In some aspects,the resources or control information indicated by the single DCI arebased at least in part on whether a UE is enabled to concurrentlycommunicate using multiple TCI states.

Particular aspects of the subject matter described in this disclosurecan be implemented to realize one or more of the following potentialadvantages. In some examples, the described techniques can be used toschedule multiple TTIs (for example, slots) using single DCI to therebyreduce control communication overhead as well as decrease controlmonitoring overhead. Accordingly, use of the single DCI may provideefficient signaling of resource assignments in the multiple TTIs,thereby enabling efficient operation in higher-frequency bands that usea higher subcarrier spacing and smaller slot and symbol durations.Moreover, use of the single DCI may provide efficient signaling ofmultiple TCI states to a UE capable of processing multiple TCI statessimultaneously (for example, a UE equipped with multiple antenna panels,or a UE that is to receive non-coherent joint transmissions frommultiple TRPs).

FIG. 7 is a diagram illustrating an example of scheduling resources formultiple TCI states in multiple TTIs using single DCI in accordance withvarious aspects of the present disclosure. As shown in FIG. 7 , a UE 120may communicate with a BS 110 in connection with scheduling a downlinktransmission or an uplink transmission. In some aspects, UE 120 may beenabled to concurrently communicate using multiple TCI states (that is,using multiple beams). In some other aspects, UE 120 may not be enabledto concurrently communicate using multiple TCI states. Accordingly, UE120 may transmit to BS 110 information indicating whether UE 120 isenabled to concurrently communicate using multiple TCI states.

In a first operation 705, BS 110 may determine resources for multipleTCI states that are to be used by UE 120 for transmitting or receivingcommunications in multiple TTIs. In some aspects, a TTI may be a slot, amini-slot, among other examples. In some aspects, each communication maybe associated with a respective TCI state of the multiple TCI states.For example, a first communication may be associated with a first TCIstate, and a second communication may be associated with a second TCIstate. In some aspects, the first communication may include a first setof redundancy versions of a transport block, and the secondcommunication may include a second set of redundancy versions of thetransport block. In some other aspects, the first communication mayinclude a first transport block, and the second communication mayinclude a second transport block (for example, with the same modulationand coding schemes).

The resources may be physical uplink shared channel (PUSCH) resources(for example, in an example in which UE 120 is transmitting thecommunications) or may be PDSCH resources (for example, in an example inwhich UE 120 is receiving the communications). In some aspects, theresources may have one or more time domain resource assignments or oneor more frequency domain resource assignments that are the same for themultiple TCI states, or the resources may have one or more time domainresource assignments or one or more frequency domain resourceassignments that are different for the multiple TCI states. BS 110 maydetermine the time domain resource assignments and the frequency domainresource assignments of the resources as described in FIGS. 8A-8H.

In some aspects, BS 110 also may determine control information for themultiple TCI states that are to be used by UE 120 for transmitting orreceiving the communications in the multiple TTIs. For example, BS 110may determine redundancy versions of one or more transport blocks thatare to be transmitted or received in the resources. As another example,BS 110 may determine one or more timing values (for example, K0 valuesor K2 values) for transmitting or receiving the communications in theresources. As a further example, BS 110 may determine one or more startand length indicator values (SLIVs) for transmitting or receiving thecommunications in the resources. As an additional example, BS 110 maydetermine one or more hybrid automatic repeat request (HARD) processidentifiers for the communications.

In a second operation 710, BS 110 may transmit, and UE 120 may receive,single DCI that indicates the resources determined by BS 110 for thecommunications. That is, the single DCI may indicate the resources formultiple TCI states that are to be used by UE 120 for transmitting orreceiving the communications in the multiple TTIs. In addition, thesingle DCI may indicate the control information determined by BS 110 forthe communications.

In some aspects, the single DCI may indicate a respective set of theresources that are to be used for each TCI state. In some aspects, thesingle DCI may indicate a respective pattern (for example, a frequencyhopping pattern) for determining the resources that are to be used foreach TCI state. In some aspects, the single DCI may indicate a set ofcommon resources or control information that are to be shared by themultiple TCI states, and may indicate a respective set of the resourcesor the control information for each TCI state that are not common to theTCI states.

In some aspects, such as in an example in which the communications areto be transmitted or received on multiple component carriers, the singleDCI may indicate the resources or control information for a firstcomponent carrier. In such examples, UE 120 may determine the resourcesor control information for a second component carrier based at least inpart on the resources or control information for the first componentcarrier. For example, the resources or the control information for thesecond component carrier may be the same as the resources or the controlinformation for the first component carrier. As another example, theresources for the second component carrier may be scaled relative to theresources for the first component carrier in accordance with adifference between subcarrier spacings of the first and second componentcarriers.

In a third operation 715, BS 110 and UE 120 may communicate, over themultiple TTIs, in accordance with the single DCI. That is, UE 120 maytransmit or receive the communications, over the multiple TTIs, in theresources indicated by the single DCI and using the multiple TCI states.For example, based on the multiple TCI states indicated by the DCI, eachbeing associated with a respective communication, UE 120 may determinerespective beams that are to be used to transmit or receive thecommunications. Accordingly, UE 120 may use the respective beams totransmit or receive (for example, orthogonally or simultaneously) thecommunications over the multiple TTIs in the resources indicated by thesingle DCI. In this way, the single DCI may reduce a quantity of controlcommunications that are transmitted from BS 110 to UE 120 as well asreduce control monitoring performed by UE 120.

FIGS. 8A-8H are diagrams illustrating examples of scheduling resourcesfor multiple TCI states in multiple TTIs using single DCI in accordancewith various aspects of the present disclosure. FIGS. 8A-8H show exampletime domain resource assignments and frequency domain resourceassignments of the resources that may be indicated by the single DCI.For example, BS 110 may determine time domain resource assignments andfrequency domain resource assignments of the resources as shown in FIGS.8A-8H. Similarly, UE 120 may transmit or receive the communications inthe resources having time domain resource assignments and frequencydomain resource assignments as shown in FIGS. 8A-8H.

As shown in FIGS. 8A-8H, a first communication (Communication 1) may beassociated with a first TCI state (TCI-1) and a second communication(Communication 2) may be associated with a second TCI state (TCI-2).That is, the single DCI may indicate that the first communication(Communication 1) is to be transmitted or received by UE 120 using thefirst TCI state (TCI-1), and the second communication (Communication 2)is to be transmitted or received by UE 120 using the second TCI state(TCI-2).

As shown in FIG. 8A, BS 110 may determine the resources so as to enablespatial division multiplexing (SDM) of the communications over multipleTTIs. For example, time domain resource assignments of the resources forthe first TCI state (TCI-1) may be the same as time domain resourceassignments of the resources for the second TCI state (TCI-2), andfrequency domain resource assignments of the resources for the first TCIstate (TCI-1) may overlap with frequency domain resource assignments ofthe resources for the second TCI state (TCI-2). In other words, thesingle DCI may indicate common time domain resource assignments andfrequency domain resource assignments for the first TCI state (TCI-1)and the second TCI state (TCI-2).

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have common time domain resourceassignments that are the same over multiple TTIs. That is, the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) mayhave time domain resource assignments for TTI-1, TTI-2, and TTI-3. Inaddition, the resources for the first TCI state (TCI-1) and the secondTCI state (TCI-2) may have frequency domain resource assignments thatoverlap in each of TTI-1, TTI-2, and TTI-3. In this way, UE 120 maytransmit or receive the first communication (Communication 1) and thesecond communication (Communication 2) concurrently (for example, usingmultiple panels of UE 120) over multiple TTIs. For example, UE 120 mayreceive the first communication (Communication 1) and the secondcommunication (Communication 2) concurrently from a single TRP or frommultiple TRPs.

As shown in FIG. 8B, BS 110 may determine the resources so as to enabletransmission or reception of the communications on multiple componentcarriers over multiple TTIs. For example, time domain resourceassignments of the resources for the first TCI state (TCI-1) may be thesame as time domain resources assignments of the resources for thesecond TCI state (TCI-2), and the first TCI state (TCI-1) may beassociated with a first component carrier (CC1) and the second TCI state(TCI-2) may be associated with a second component carrier (CC2). Inother words, the single DCI may indicate common time domain resourceassignments for the first TCI state (TCI-1) and the second TCI state(TCI-2), and indicate different component carriers for the first TCIstate (TCI-1) and the second TCI state (TCI-2).

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have common time domain resourceassignments that are the same over multiple TTIs. That is, the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) mayhave time domain resource assignments for TTI-1, TTI-2, and TTI-3. Inaddition, frequency domain resource assignments of the resources for thefirst TCI state (TCI-1) on the first component carrier (CC1) may bedifferent than frequency domain resource assignments of the resourcesfor the second TCI state (TCI-2) on the second component carrier (CC2)in each of TTI-1, TTI-2, and TTI-3. In this way, UE 120 may transmit orreceive the first communication (Communication 1) and the secondcommunication (Communication 2) on multiple component carriers overmultiple TTIs.

As shown in FIG. 8C, BS 110 may determine the resources so as to enabletransmission or reception of the communications on multiple componentcarriers over multiple TTIs. For example, time domain resourceassignments of the resources for the first TCI state (TCI-1) may be thesame as time domain resources assignments of the resources for thesecond TCI state (TCI-2), and frequency domain resource assignments ofthe resources for the first TCI state (TCI-1) may overlap with frequencydomain resource assignments for the second TCI state (TCI-2) on thefirst component carrier (CC1) or the second component carrier (CC-2).That is, BS 110 may determine the resources so as to enable SDM of thecommunications on respective component carriers over multiple TTIs.

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have common time domain resourceassignments that are the same over multiple TTIs. That is, the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) mayhave time domain resource assignments for TTI-1, TTI-2, and TTI-3. Inaddition, frequency domain resource assignments of the resources for thefirst TCI state (TCI-1) on the first component carrier (CC1) may overlapwith frequency domain resource assignments of the resources for thesecond TCI state (TCI-2) on the first component carrier (CC1) in each ofTTI-1, TTI-2, and TTI-3. Moreover, frequency domain resource assignmentsof the resources for the first TCI state (TCI-1) on the second componentcarrier (CC2) may overlap with frequency domain resource assignments ofthe resources for the second TCI state (TCI-2) on the second componentcarrier (CC2) in each of TTI-1, TTI-2, and TTI-3. In this way, UE 120may transmit or receive the first communication (Communication 1) andthe second communication (Communication 2) on multiple componentcarriers over multiple TTIs. Moreover, UE 120 may transmit or receivethe first communication (Communication 1) and the second communication(Communication 2) concurrently (for example, using multiple panels of UE120) on multiple component carriers.

As shown in FIG. 8D, BS 110 may determine the resources so as to enablefrequency division multiplexing (FDM) of the communications overmultiple TTIs. For example, time domain resource assignments of theresources for the first TCI state (TCI-1) may be the same as time domainresources assignments of the resources for the second TCI state (TCI-2),and frequency domain resource assignments of the resources for the firstTCI state (TCI-1) may not overlap with frequency domain resourceassignments for the second TCI state (TCI-2). In other words, the singleDCI may indicate common time domain resource assignments for the firstTCI state (TCI-1) and the second TCI state (TCI-2), and may indicatedifferent frequency domain resource assignments for the first TCI state(TCI-1) and the second TCI state (TCI-2).

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have common time domain resourceassignments that are the same over multiple TTIs. That is, the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) mayhave time domain resource assignments for TTI-1, TTI-2, and TTI-3. Inaddition, the resources for the first TCI state (TCI-1) and the secondTCI state (TCI-2) may have frequency domain resource assignments that donot overlap in each of TTI-1, TTI-2, and TTI-3. In this way, UE 120 maytransmit or receive the first communication (Communication 1) and thesecond communication (Communication 2) concurrently (for example, usingmultiple panels of UE 120) over multiple TTIs. For example, UE 120 mayreceive the first communication (Communication 1) and the secondcommunication (Communication 2) concurrently from multiple TRPs.

As shown in FIG. 8E, BS 110 may determine the resources so as to enabletime division multiplexing (TDM) of the communications over multipleTTIs. For example, time domain resource assignments of the resources forthe first TCI state (TCI-1) may be different than time domain resourceassignments of the resources for the second TCI state (TCI-2), andfrequency domain resource assignments of the resources for the first TCIstate (TCI-1) may be different than frequency domain resourceassignments for the second TCI state (TCI-2). In other words, the singleDCI may indicate different time domain resource assignments andfrequency domain resource assignments for the first TCI state (TCI-1)and the second TCI state (TCI-2).

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have different time domain resourceassignments over multiple TTIs. For example, the resources for the firstTCI state (TCI-1) may have time domain resource assignments for TTI-1and TTI-3, and the resources for the second TCI state (TCI-2) may havetime domain resource assignments for TTI-2 and TTI-4. In addition, thefrequency domain resource assignments of the resources for the first TCIstate (TCI-1) in TTI-1 and TTI-3 may be different than the frequencydomain resource assignments of the resources for the second TCI state(TCI-2) in TTI-2 and TTI-4. In this way, in an example in which UE 120is not enabled to concurrently communicate using multiple TCI states, UE120 may transmit or receive the first communication (Communication 1)and the second communication (Communication 2) over multiple TTIs.Accordingly, in some aspects, BS 110 may determine the resources basedat least in part on a determination that UE 120 is not enabled toconcurrently communicate using multiple TCI states.

As shown in FIG. 8F, BS 110 may determine the resources so as to enableTDM of the communications with frequency hopping over multiple TTIs. Forexample, time domain resource assignments of the resources for the firstTCI state (TCI-1) may be the same as time domain resource assignments ofthe resources for the second TCI state (TCI-2), and frequency domainresource assignments of the resources for the first TCI state (TCI-1)may be in accordance with a first frequency hopping pattern that isdifferent than a second frequency hopping pattern for frequency domainresource assignments for the second TCI state (TCI-2). In other words,the single DCI may indicate common time domain resource assignments forthe first TCI state (TCI-1) and the second TCI state (TCI-2), and mayindicate different frequency hopping patterns for the first TCI state(TCI-1) and the second TCI state (TCI-2).

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have common time domain resourceassignments that are the same over multiple TTIs. That is, the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) mayhave time domain resource assignments for TTI-1, TTI-2, and TTI-3. InTTI-1, frequency domain resource assignments of the resources for thefirst TCI state (TCI-1) may be different than frequency domain resourceassignments of the resources for the second TCI state (TCI-2). In TTI-2,frequency domain resource assignments of the resources for the first TCIstate (TCI-1) and the resources for the second TCI state (TCI-2) may hopfrequencies relative to TTI-1, and frequency domain resource assignmentsof the resources for the first TCI state (TCI-1) may be different thanfrequency domain resource assignments of the resources for the secondTCI state (TCI-2). In TTI-3, frequency domain resource assignments ofthe resources for the first TCI state (TCI-1) and the resources for thesecond TCI state (TCI-2) may hop frequencies relative to TTI-2, andfrequency domain resource assignments of the resources for the first TCIstate (TCI-1) may be different than frequency domain resourceassignments of the resources for the second TCI state (TCI-2). In thisway, in an example in which UE 120 is enabled to concurrentlycommunicate using multiple TCI states, UE 120 may transmit or receivethe first communication (Communication 1) and the second communication(Communication 2) with frequency hopping over multiple TTIs.

As shown in FIG. 8G, BS 110 may determine time domain resourceassignments and frequency domain resource assignments of the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) that donot correspond to a particular SDM, FDM, TDM, or frequency hoppingscheme (for example, TCI-1 and TCI-2 may have independent rectangular ornon-rectangular frequency domain resource assignments). For example,time domain resource assignments of the resources for the first TCIstate (TCI-1) may partially overlap with time domain resourcesassignments of the resources for the second TCI state (TCI-2), andfrequency domain resource assignments of the resources for the first TCIstate (TCI-1) may partially overlap with frequency domain resourceassignments for the second TCI state (TCI-2). In other words, the singleDCI may indicate different time domain resource assignments andfrequency domain resources assignments for the first TCI state (TCI-1)and the second TCI state (TCI-2).

In particular, the time domain resource assignments of the resources forthe first TCI state (TCI-1) and the second TCI state (TCI-2) maypartially overlap over multiple TTIs. For example, the resources for thefirst TCI state (TCI-1) may have time domain resource assignments forTTI-1, TTI-2, and TTI-3, and the resources for the second TCI state(TCI-2) may have time domain resource assignments for TTI-2 and TTI-3.In addition, the frequency domain resource assignments of the resourcesfor the first TCI state (TCI-1) in TTI-2 and TTI-3 (that is, theoverlapping TTIs of TCI-1 and TCI-2) may partially overlap with thefrequency domain resource assignments of the resources for the secondTCI state (TCI-2) in TTI-2 and TTI-3. In this way, UE 120 may transmitor receive the first communication (Communication 1) and the secondcommunication (Communication 2) concurrently (for example, usingmultiple panels of UE 120) over multiple TTIs. For example, UE 120 mayreceive the first communication (Communication 1) and the secondcommunication (Communication 2) concurrently from multiple TRPs.

As shown in FIG. 8H, BS 110 may determine time domain resourceassignments and frequency domain resource assignments of the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) that donot correspond to a particular SDM, FDM, TDM, or frequency hoppingscheme (for example, TCI-1 and TCI-2 may have independent rectangular ornon-rectangular frequency domain resource assignments). For example, thefirst communication (Communication 1) and the second communication(Communication 2) may correspond to respective transport blocks havingdifferent modulation and coding schemes, different time domain resourceassignments, or different frequency domain resource assignments. As anexample, the resources of the first TCI state (TCI-1) may be scheduledfor a HARQ retransmission of the first communication (Communication 1)and the resources of the second TCI state (TCI-2) may be scheduled for afirst transmission of the second communication (Communication 2).

In some aspects, as shown in FIG. 8H, the resources of the first TCIstate (TCI-1) and the resources of the second TCI state (TCI-2) may berate matched around a third communication (Communication 3). Forexample, time domain resource assignments of the resources for the firstTCI state (TCI-1) may be the same as time domain resources assignmentsof the resources for the second TCI state (TCI-2), and frequency domainresource assignments of the resources for the first TCI state (TCI-1)and the resources for the second TCI state (TCI-2) may be rate matchedaround resources scheduled for another communication (Communication 3)in one or more TTIs.

In particular, the resources for the first TCI state (TCI-1) and thesecond TCI state (TCI-2) may have common time domain resourceassignments that are the same over multiple TTIs. That is, the resourcesfor the first TCI state (TCI-1) and the second TCI state (TCI-2) mayhave time domain resource assignments for TTI-1, TTI-2, and TTI-3. Inaddition, the resources for the first TCI state (TCI-1) and the secondTCI state (TCI-2) may have frequency domain resource assignments thatoverlap in each of TTI-1, TTI-2, and TTI-3. Moreover, the resources forthe first TCI state (TCI-1) and the second TCI state (TCI-2) may havefrequency domain resource assignments that are rate matched around thethird communication (Communication 3) in TTI-2. The third communication(Communication 3) may be a semi-persistent scheduling (SPS)communication, a synchronization signal block (SSB), a channel stateinformation reference signal (CSI-RS), among other examples. In thisway, UE 120 may transmit or receive the first communication(Communication 1) and the second communication (Communication 2)concurrently (for example, using multiple panels of UE 120) overmultiple TTIs as well as transmit or receive the third communication(Communication 3) in accordance with other scheduling.

FIG. 9 is a diagram illustrating an example process 900 performed, forexample, by a UE, in accordance with various aspects of the presentdisclosure. Example process 900 is an example where a UE, such as UE120, performs operations associated with scheduling resources formultiple TCI states in multiple TTIs using single DCI.

As shown in FIG. 9 , in some aspects, process 900 may include receivingsingle DCI that indicates resources for a plurality of TCI states fortransmitting or receiving communications in a plurality of TTIs (block910). For example, the UE (using antenna 252, DEMOD 254, MIMO detector256, receive processor 258, controller/processor 280, among otherexamples) may receive single DCI that indicates resources for aplurality of TCI states for transmitting or receiving communications ina plurality of TTIs, as described above.

As further shown in FIG. 9 , in some aspects, process 900 may includetransmitting or receiving the communications in the plurality of TTIs inaccordance with the DCI (block 920). For example, the UE (using antenna252, DEMOD 254, MIMO detector 256, receive processor 258,controller/processor 280, transmit processor 264, TX MIMO processor 266,MOD 254, among other examples) may transmit or receive thecommunications in the plurality of TTIs in accordance with the DCI, asdescribed above.

In some examples, transmitting or receiving the communications includestransmitting or receiving the communications using spatial divisionmultiplexing, frequency division multiplexing, or time divisionmultiplexing. In some examples, transmitting or receiving thecommunications includes transmitting or receiving the communicationsconcurrently using multiple TCI states. In some other examples,transmitting or receiving the communications includes transmitting orreceiving the communications non-concurrently (that is, sequentially)using multiple TCI states. In some examples, process 900 includesperforming rate matching of the communications around other resourcesscheduled for another communication in one or more of the plurality ofTTIs.

Process 900 may include additional aspects, such as any single aspect orany combination of aspects described below or in connection with one ormore other processes described elsewhere herein.

In a first aspect, a first communication, of the communications,associated with a first TCI state, of the plurality of TCI states, isassociated with a first redundancy version of a transport block, and asecond communication, of the communications, associated with a secondTCI state, of the plurality of TCI states, is associated with a secondredundancy version of the transport block. In a second additionalaspect, alone or in combination with the first aspect, a firstcommunication, of the communications, associated with a first TCI state,of the plurality of TCI states, is associated with a first transportblock, and a second communication, of the communications, associatedwith a second TCI state, of the plurality of TCI states, is associatedwith a second transport block.

In a third additional aspect, alone or in combination with one or moreof the first and second aspects, time domain resource assignments of theresources for a first TCI state, of the plurality of TCI states, are thesame as time domain resource assignments of the resources for a secondTCI state of the plurality of TCI states, and frequency domain resourceassignments of the resources for the first TCI state overlap withfrequency domain resource assignments of the resources for the secondTCI state. In a fourth additional aspect, alone or in combination withone or more of the first through third aspects, the communications aretransmitted or received using spatial division multiplexing.

In a fifth additional aspect, alone or in combination with one or moreof the first through fourth aspects, the DCI commonly indicates the timedomain resource assignments of the resources for the first TCI state andthe time domain resource assignments of the resources for the second TCIstate, and the DCI commonly indicates the frequency domain resourceassignments of the resources for the first TCI state and the frequencydomain resource assignments of the resources for the second TCI state.

In a sixth additional aspect, alone or in combination with one or moreof the first through fifth aspects, the frequency domain resourceassignments of the resources for the first TCI state overlap with thefrequency domain resource assignments of the resources for the secondTCI state in a first component carrier and in a second componentcarrier.

In a seventh additional aspect, alone or in combination with one or moreof the first through sixth aspects, time domain resource assignments ofthe resources for a first TCI state, of the plurality of TCI states, arethe same as time domain resource assignments of the resources for asecond TCI state of the plurality of TCI states, and frequency domainresource assignments of the resources for the first TCI state do notoverlap with frequency domain resource assignments of the resources forthe second TCI state. In an eighth additional aspect, alone or incombination with one or more of the first through seventh aspects, thecommunications are transmitted or received using frequency divisionmultiplexing.

In a ninth additional aspect, alone or in combination with one or moreof the first through eighth aspects, the DCI commonly indicates the timedomain resource assignments of the resources for the first TCI state andthe time domain resource assignments of the resources for the second TCIstate, and the DCI separately indicates the frequency domain resourceassignments of the resources for the first TCI state and the frequencydomain resource assignments of the resources for the second TCI state.

In a tenth additional aspect, alone or in combination with one or moreof the first through ninth aspects, the frequency domain resourceassignments of the resources for the first TCI state are in a firstcomponent carrier, and the frequency domain resource assignments of theresources for the second TCI state are in a second component carrier.

In an eleventh additional aspect, alone or in combination with one ormore of the first through tenth aspects, time domain resourceassignments of the resources for a first TCI state, of the plurality ofTCI states, are different than time domain resource assignments of theresources for a second TCI state of the plurality of TCI states, andfrequency domain resource assignments of the resources for the first TCIstate are different than frequency domain resource assignments of theresources for the second TCI state. In a twelfth additional aspect,alone or in combination with one or more of the first through eleventhaspects, the DCI separately indicates the time domain resourceassignments of the resources for the first TCI state and the time domainresource assignments of the resources for the second TCI state, and theDCI separately indicates the frequency domain resource assignments ofthe resources for the first TCI state and the frequency domain resourceassignments of the resources for the second TCI state. In a thirteenthadditional aspect, alone or in combination with one or more of the firstthrough twelfth aspects, the UE is not enabled to concurrentlycommunicate using multiple TCI states.

In a fourteenth additional aspect, alone or in combination with one ormore of the first through thirteenth aspects, frequency domain resourceassignments of the resources for a first TCI state, of the plurality ofTCI states, are in accordance with a first frequency hopping pattern,and frequency domain resource assignments of the resources for a secondTCI state, of the plurality of TCI states, are in accordance with asecond frequency hopping pattern. In a fifteenth additional aspect,alone or in combination with one or more of the first through fourteenthaspects, the communications are transmitted or received using timedivision multiplexing. In a sixteenth additional aspect, alone or incombination with one or more of the first through fifteenth aspects, theUE is enabled to concurrently communicate using multiple TCI states.

In a seventeenth additional aspect, alone or in combination with one ormore of the first through sixteenth aspects, time domain resourceassignments of the resources for a first TCI state, of the plurality ofTCI states, partially overlap with time domain resource assignments ofthe resources for a second TCI state of the plurality of TCI states, andfrequency domain resource assignments of the resources for the first TCIstate partially overlap with frequency domain resource assignments ofthe resources for the second TCI state. In an eighteenth additionalaspect, alone or in combination with one or more of the first throughseventeenth aspects, the frequency domain resource assignments of theresources for the first TCI state and the frequency domain resourceassignments of the resources for the second TCI state are rate matchedaround other resources scheduled for another communication in one ormore of the plurality of TTIs.

In a nineteenth additional aspect, alone or in combination with one ormore of the first through eighteenth aspects, the DCI identifies a firsttime domain resource assignment and frequency domain resource assignmentin a first component carrier, and process 900 includes determining asecond time domain resource assignment and frequency domain resourceassignment in a second component carrier based at least in part on thefirst time domain resource assignment and frequency domain resourceassignment. In a twentieth additional aspect, alone or in combinationwith one or more of the first through nineteenth aspects, transmittingor receiving the communications includes transmitting a retransmissionof a first communication, of the communications, using a first TCIstate, of the plurality of TCI states, and transmitting an initialtransmission of a second communication, of the communications, using asecond TCI state of the plurality of TCI states. In a twenty-firstadditional aspect, alone or in combination with one or more of the firstthrough twentieth aspects, process 900 includes transmitting informationindicating whether the UE is enabled to concurrently communicate usingmultiple TCI states, and the resources indicated by the DCI are based atleast in part on whether the UE is enabled to concurrently communicateusing multiple TCI states.

Although FIG. 9 shows example blocks of process 900, in some aspects,process 900 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 9 .Additionally or alternatively, two or more of the blocks of process 900may be performed in parallel.

FIG. 10 is a diagram illustrating an example process 1000 performed, forexample, by a BS, in accordance with various aspects of the presentdisclosure. Example process 1000 is an example where a BS, such as BS110, performs operations associated with scheduling resources formultiple TCI states in multiple TTIs using single DCI.

As shown in FIG. 10 , in some aspects, process 1000 may includedetermining, for a UE, resources for a plurality of TCI states fortransmitting or receiving communications in a plurality of TTIs (block1010). For example, the BS (using controller/processor 240, among otherexamples) may determine, for a UE, resources for a plurality of TCIstates for transmitting or receiving communications in a plurality ofTTIs, as described above.

As further shown in FIG. 10 , in some aspects, process 1000 may includetransmitting, to the UE, single DCI that indicates the resources for theplurality of TCI states (block 1020). For example, the BS (usingcontroller/processor 240, transmit processor 220, TX MIMO processor 230,MOD 232, antenna 234, among other examples) may transmit, to the UE,single DCI that indicates the resources for the plurality of TCI states,as described above.

In some examples, process 1000 may include transmitting or receiving thecommunications in the plurality of TTIs in accordance with the DCI. Insome examples, transmitting or receiving the communications includestransmitting or receiving the communications using spatial divisionmultiplexing, frequency division multiplexing, or time divisionmultiplexing. In some examples, transmitting or receiving thecommunications includes transmitting or receiving the communicationsconcurrently using multiple TCI states. In some other examples,transmitting or receiving the communications includes transmitting orreceiving the communications non-concurrently (that is, sequentially)using multiple TCI states. In some examples, process 900 includesperforming rate matching of the communications around other resourcesscheduled for another communication in one or more of the plurality ofTTIs.

Process 1000 may include additional aspects, such as any single aspector any combination of aspects described below or in connection with oneor more other processes described elsewhere herein.

In a first aspect, a first communication, of the communications,associated with a first TCI state, of the plurality of TCI states, isassociated with a first redundancy version of a transport block, and asecond communication, of the communications, associated with a secondTCI state, of the plurality of TCI states, is associated with a secondredundancy version of the transport block. In a second additionalaspect, alone or in combination with the first aspect, a firstcommunication, of the communications, associated with a first TCI state,of the plurality of TCI states, is associated with a first transportblock, and a second communication, of the communications, associatedwith a second TCI state, of the plurality of TCI states, is associatedwith a second transport block.

In a third additional aspect, alone or in combination with one or moreof the first and second aspects, time domain resource assignments of theresources for a first TCI state, of the plurality of TCI states, are thesame as time domain resource assignments of the resources for a secondTCI state of the plurality of TCI states, and frequency domain resourceassignments of the resources for the first TCI state overlap withfrequency domain resource assignments of the resources for the secondTCI state. In a fourth additional aspect, alone or in combination withone or more of the first through third aspects, the communications areto be transmitted or received using spatial division multiplexing.

In a fifth additional aspect, alone or in combination with one or moreof the first through fourth aspects, the DCI commonly indicates the timedomain resource assignments of the resources for the first TCI state andthe time domain resource assignments of the resources for the second TCIstate, and the DCI commonly indicates the frequency domain resourceassignments of the resources for the first TCI state and the frequencydomain resource assignments of the resources for the second TCI state.

In a sixth additional aspect, alone or in combination with one or moreof the first through fifth aspects, the frequency domain resourceassignments of the resources for the first TCI state overlap with thefrequency domain resource assignments of the resources for the secondTCI state in a first component carrier and in a second componentcarrier.

In a seventh additional aspect, alone or in combination with one or moreof the first through sixth aspects, time domain resource assignments ofthe resources for a first TCI state, of the plurality of TCI states, arethe same as time domain resource assignments of the resources for asecond TCI state of the plurality of TCI states, and frequency domainresource assignments of the resources for the first TCI state do notoverlap with frequency domain resource assignments of the resources forthe second TCI state. In an eighth additional aspect, alone or incombination with one or more of the first through seventh aspects, thecommunications are to be transmitted or received using frequencydivision multiplexing.

In a ninth additional aspect, alone or in combination with one or moreof the first through eighth aspects, the DCI commonly indicates the timedomain resource assignments of the resources for the first TCI state andthe time domain resource assignments of the resources for the second TCIstate, and the DCI separately indicates the frequency domain resourceassignments of the resources for the first TCI state and the frequencydomain resource assignments of the resources for the second TCI state.

In a tenth additional aspect, alone or in combination with one or moreof the first through ninth aspects, the frequency domain resourceassignments of the resources for the first TCI state are in a firstcomponent carrier, and the frequency domain resource assignments of theresources for the second TCI state are in a second component carrier.

In an eleventh additional aspect, alone or in combination with one ormore of the first through tenth aspects, time domain resourceassignments of the resources for a first TCI state, of the plurality ofTCI states, are different than time domain resource assignments of theresources for a second TCI state of the plurality of TCI states, andfrequency domain resource assignments of the resources for the first TCIstate are different than frequency domain resource assignments of theresources for the second TCI state. In a twelfth additional aspect,alone or in combination with one or more of the first through eleventhaspects, the DCI separately indicates the time domain resourceassignments of the resources for the first TCI state and the time domainresource assignments of the resources for the second TCI state, and theDCI separately indicates the frequency domain resource assignments ofthe resources for the first TCI state and the frequency domain resourceassignments of the resources for the second TCI state. In a thirteenthadditional aspect, alone or in combination with one or more of the firstthrough twelfth aspects, the UE is not enabled to concurrentlycommunicate using multiple TCI states.

In a fourteenth additional aspect, alone or in combination with one ormore of the first through thirteenth aspects, frequency domain resourceassignments of the resources for a first TCI state, of the plurality ofTCI states, are in accordance with a first frequency hopping pattern,and frequency domain resource assignments of the resources for a secondTCI state, of the plurality of TCI states, are in accordance with asecond frequency hopping pattern. In a fifteenth additional aspect,alone or in combination with one or more of the first through fourteenthaspects, the communications are to be transmitted or received using timedivision multiplexing. In a sixteenth additional aspect, alone or incombination with one or more of the first through fifteenth aspects, theUE is enabled to concurrently communicate using multiple TCI states.

In a seventeenth additional aspect, alone or in combination with one ormore of the first through sixteenth aspects, time domain resourceassignments of the resources for a first TCI state, of the plurality ofTCI states, partially overlap with time domain resource assignments ofthe resources for a second TCI state of the plurality of TCI states, andfrequency domain resource assignments of the resources for the first TCIstate partially overlap with frequency domain resource assignments ofthe resources for the second TCI state. In an eighteenth additionalaspect, alone or in combination with one or more of the first throughseventeenth aspects, the frequency domain resource assignments of theresources for the first TCI state and the frequency domain resourceassignments of the resources for the second TCI state are rate matchedaround other resources scheduled for another communication in one ormore of the plurality of TTIs.

In a nineteenth additional aspect, alone or in combination with one ormore of the first through eighteenth aspects, the DCI identifies a firsttime domain resource assignment and frequency domain resource assignmentin a first component carrier to enable the UE to determine a second timedomain resource assignment and frequency domain resource assignment in asecond component carrier based at least in part on the first time domainresource assignment and frequency domain resource assignment. In atwentieth additional aspect, alone or in combination with one or more ofthe first through nineteenth aspects, the DCI schedules a retransmissionof a first communication, of the communications, using a first TCIstate, of the plurality of TCI states, and schedules an initialtransmission of a second communication, of the communications, using asecond TCI state of the plurality of TCI states. In a twenty-firstadditional aspect, alone or in combination with one or more of the firstthrough twentieth aspects, process 900 includes receiving informationindicating whether the UE is enabled to concurrently communicate usingmultiple TCI states, and the resources indicated by the DCI are based atleast in part on whether the UE is enabled to concurrently communicateusing multiple TCI states.

Although FIG. 10 shows example blocks of process 1000, in some aspects,process 1000 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 10 .Additionally or alternatively, two or more of the blocks of process 1000may be performed in parallel.

FIG. 11 is a diagram illustrating an example apparatus 1100 for wirelesscommunication in accordance with various aspects of the presentdisclosure. The apparatus 1100 may be a UE, or a UE may include theapparatus 1100. In some aspects, the apparatus 1100 includes a receptioncomponent 1102, a communication manager 1104, and a transmissioncomponent 1106, which may be in communication with one another (forexample, via one or more buses). As shown, the apparatus 1100 maycommunicate with another apparatus 1108 (such as a UE, a base station,or another wireless communication device) using the reception component1102 and the transmission component 1106.

In some aspects, the apparatus 1100 may be configured to perform one ormore operations described herein in connection with FIGS. 7 and 8A-8H.Additionally or alternatively, the apparatus 1100 may be configured toperform one or more processes described herein, such as process 900 ofFIG. 9 , or a combination thereof. In some aspects, the apparatus 1100may include one or more components of the UE described above inconnection with FIG. 2 .

The reception component 1102 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 1108. The reception component1102 may provide received communications to one or more other componentsof the apparatus 1100, such as the communication manager 1104. In someaspects, the reception component 1102 may perform signal processing onthe received communications (such as filtering, amplification,demodulation, analog-to-digital conversion, demultiplexing,deinterleaving, de-mapping, equalization, interference cancellation, ordecoding, among other examples), and may provide the processed signalsto the one or more other components. In some aspects, the receptioncomponent 1102 may include one or more antennas, a demodulator, a MIMOdetector, a receive processor, a controller/processor, a memory, or acombination thereof, of the UE described above in connection with FIG. 2.

The transmission component 1106 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 1108. In some aspects, thecommunication manager 1104 may generate communications and may transmitthe generated communications to the transmission component 1106 fortransmission to the apparatus 1108. In some aspects, the transmissioncomponent 1106 may perform signal processing on the generatedcommunications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 1108. In some aspects, the transmission component 1106may include one or more antennas, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the UE described above in connection with FIG. 2. In some aspects, the transmission component 1106 may be co-locatedwith the reception component 1102 in a transceiver.

The communication manager 1104 may receive or may cause the receptioncomponent 1102 to receive single DCI that indicates resources for aplurality of TCI states for transmitting or receiving communications ina plurality of TTIs. The communication manager 1104 may transmit or maycause the transmission component 1106 to transmit the communications inthe plurality of TTIs in accordance with the DCI. Alternatively, thecommunication manager 1104 may receive or may cause the receptioncomponent 1102 to receive the communications in the plurality of TTIs inaccordance with the DCI. In some aspects, the DCI identifies a firsttime domain resource assignment and frequency domain resource assignmentin a first component carrier, and the communication manager 1104 maydetermine a second time domain resource assignment and frequency domainresource assignment in a second component carrier based at least in parton the first time domain resource assignment and frequency domainresource assignment. In some aspects, the communication manager 1104 mayperform one or more operations described elsewhere herein as beingperformed by one or more components of the communication manager 1104.

The communication manager 1104 may include a controller/processor, amemory, or a combination thereof, of the UE described above inconnection with FIG. 2 . In some aspects, the communication manager 1104includes a set of components associated with performing operationsdescribed herein. Alternatively, the set of components may be separateand distinct from the communication manager 1104. In some aspects, oneor more components of the set of components may include or may beimplemented within a controller/processor, a memory, or a combinationthereof, of the UE described above in connection with FIG. 2 .Additionally or alternatively, one or more components of the set ofcomponents may be implemented at least in part as software stored in amemory. For example, a component (or a portion of a component) may beimplemented as instructions or code stored in a non-transitorycomputer-readable medium and executable by a controller or a processorto perform the functions or operations of the component.

In some aspects, the reception component 1102 may receive single DCIthat indicates resources for a plurality of TCI states for transmittingor receiving communications in a plurality of TTIs. In some aspects, thetransmission component 1106 may transmit the communications in theplurality of TTIs in accordance with the DCI. The transmission component1106 may transmit the communications using spatial divisionmultiplexing, frequency division multiplexing, or time divisionmultiplexing. The transmission component 1106 may perform rate matchingof the communications around other resources scheduled for anothercommunication in the one or more of the plurality of TTIs. Thetransmission component 1106 may concurrently transmit the communicationsusing multiple TCI states. Alternatively, the transmission component1106 may not concurrently transmit (that is, sequentially transmit) thecommunications using multiple TCI states. In some aspects, thetransmission component 1106 may transmit a retransmission of a firstcommunication, of the communications, using a first TCI state, of theplurality of TCI states, and transmit an initial transmission of asecond communication, of the communications, using a second TCI state ofthe plurality of TCI states. In some aspects, the transmission component1106 may transmit information indicating whether the apparatus 1100 isenabled to concurrently communicate using multiple TCI states.

In some aspects, the reception component 1102 may receive thecommunications in the plurality of TTIs in accordance with the DCI. Thereception component 1102 may receive the communications using spatialdivision demultiplexing, frequency division demultiplexing, or timedivision demultiplexing. The reception component 1102 may performde-rate matching of the communications around other resources scheduledfor another communication in the one or more of the plurality of TTIs.The reception component 1102 may concurrently receive the communicationsusing multiple TCI states. Alternatively, the reception component 1102may not concurrently receive (that is, sequentially receive) thecommunications using multiple TCI states.

The quantity and arrangement of components shown in FIG. 11 are providedas an example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 11 . Furthermore, two or more components shownin FIG. 11 may be implemented within a single component, or a singlecomponent shown in FIG. 11 may be implemented as multiple, distributedcomponents. Additionally or alternatively, a set of (one or more)components shown in FIG. 11 may perform one or more functions describedas being performed by another set of components shown in FIG. 11 .

FIG. 12 is a diagram illustrating an example apparatus 1200 for wirelesscommunication in accordance with various aspects of the presentdisclosure. The apparatus 1200 may be a base station, or a base stationmay include the apparatus 1200. In some aspects, the apparatus 1200includes a reception component 1202, a communication manager 1204, and atransmission component 1206, which may be in communication with oneanother (for example, via one or more buses). As shown, the apparatus1200 may communicate with another apparatus 1208 (such as a UE, a basestation, or another wireless communication device) using the receptioncomponent 1202 and the transmission component 1206.

In some aspects, the apparatus 1200 may be configured to perform one ormore operations described herein in connection with FIGS. 7 and 8A-8H.Additionally or alternatively, the apparatus 1200 may be configured toperform one or more processes described herein, such as process 1000 ofFIG. 10 , or a combination thereof. In some aspects, the apparatus 1200may include one or more components of the base station described abovein connection with FIG. 2 .

The reception component 1202 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 1208. The reception component1202 may provide received communications to one or more other componentsof the apparatus 1200, such as the communication manager 1204. In someaspects, the reception component 1202 may perform signal processing onthe received communications (such as filtering, amplification,demodulation, analog-to-digital conversion, demultiplexing,deinterleaving, de-mapping, equalization, interference cancellation, ordecoding, among other examples), and may provide the processed signalsto the one or more other components. In some aspects, the receptioncomponent 1202 may include one or more antennas, a demodulator, a MIMOdetector, a receive processor, a controller/processor, a memory, or acombination thereof, of the base station described above in connectionwith FIG. 2 .

The transmission component 1206 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 1208. In some aspects, thecommunication manager 1204 may generate communications and may transmitthe generated communications to the transmission component 1206 fortransmission to the apparatus 1208. In some aspects, the transmissioncomponent 1206 may perform signal processing on the generatedcommunications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 1208. In some aspects, the transmission component 1206may include one or more antennas, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the base station described above in connectionwith FIG. 2 . In some aspects, the transmission component 1206 may beco-located with the reception component 1202 in a transceiver.

The communication manager 1204 may determine, for a UE, resources for aplurality of TCI states for transmitting or receiving communications ina plurality of TTIs. The communication manager 1204 may transmit or maycause the transmission component 1206 to transmit, to the UE, single DCIthat indicates the resources for the plurality of TCI states. In someaspects, the communication manager 1204 may perform one or moreoperations described elsewhere herein as being performed by one or morecomponents of the communication manager 1204.

The communication manager 1204 may include a controller/processor, amemory, a scheduler, a communication unit, or a combination thereof, ofthe base station described above in connection with FIG. 2 . In someaspects, the communication manager 1204 includes a set of components,such as a resource selection component 1210. Alternatively, the set ofcomponents may be separate and distinct from the communication manager1204. In some aspects, one or more components of the set of componentsmay include or may be implemented within a controller/processor, amemory, a scheduler, a communication unit, or a combination thereof, ofthe base station described above in connection with FIG. 2 .Additionally or alternatively, one or more components of the set ofcomponents may be implemented at least in part as software stored in amemory. For example, a component (or a portion of a component) may beimplemented as instructions or code stored in a non-transitorycomputer-readable medium and executable by a controller or a processorto perform the functions or operations of the component.

The resource selection component 1210 may determine, for a UE, resourcesfor a plurality of TCI states for transmitting or receivingcommunications in a plurality of TTIs. The transmission component 1206may transmit, to the UE, single DCI that indicates the resources for theplurality of TCI states. In some aspects, the transmission component1206 may transmit the communications in the plurality of TTIs inaccordance with the DCI. The transmission component 1206 may transmitthe communications using spatial division multiplexing, frequencydivision multiplexing, or time division multiplexing. The transmissioncomponent 1206 may perform rate matching of the communications aroundother resources scheduled for another communication in the one or moreof the plurality of TTIs. The transmission component 1206 mayconcurrently transmit the communications using multiple TCI states.Alternatively, the transmission component 1206 may not concurrentlytransmit (that is, sequentially transmit) the communications usingmultiple TCI states.

In some aspects, the reception component 1202 may receive thecommunications in the plurality of TTIs in accordance with the DCI. Thereception component 1202 may receive the communications using spatialdivision demultiplexing, frequency division demultiplexing, or timedivision demultiplexing. The reception component 1202 may performde-rate matching of the communications around other resources scheduledfor another communication in the one or more of the plurality of TTIs.The reception component 1202 may concurrently receive the communicationsusing multiple TCI states. Alternatively, the reception component 1202may not concurrently receive (that is, sequentially receive) thecommunications using multiple TCI states. In some aspects, the receptioncomponent 1202 may receive information indicating whether the apparatus1208 is enabled to concurrently communicate using multiple TCI states.

The quantity and arrangement of components shown in FIG. 12 are providedas an example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 12 . Furthermore, two or more components shownin FIG. 12 may be implemented within a single component, or a singlecomponent shown in FIG. 12 may be implemented as multiple, distributedcomponents. Additionally or alternatively, a set of (one or more)components shown in FIG. 12 may perform one or more functions describedas being performed by another set of components shown in FIG. 12 .

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseform disclosed. Modifications and variations may be made in light of theabove disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware, firmware, or a combination of hardware and software. Asused herein, a processor is implemented in hardware, firmware, or acombination of hardware and software.

Some aspects are described herein in connection with thresholds. As usedherein, satisfying a threshold may refer to a value being greater thanthe threshold, greater than or equal to the threshold, less than thethreshold, less than or equal to the threshold, equal to the threshold,or not equal to the threshold, among other examples, or combinationsthereof.

It will be apparent that systems or methods described herein may beimplemented in different forms of hardware, firmware, or a combinationof hardware and software. The actual specialized control hardware orsoftware code used to implement these systems or methods is not limitingof the aspects. Thus, the operation and behavior of the systems ormethods were described herein without reference to specific softwarecode—it being understood that software and hardware can be designed toimplement the systems or methods based, at least in part, on thedescription herein.

Even though particular combinations of features are recited in theclaims or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims or disclosed in the specification. Although each dependent claimlisted below may directly depend on only one claim, the disclosure ofvarious aspects includes each dependent claim in combination with everyother claim in the claim set. A phrase referring to “at least one of” alist of items refers to any combination of those items, including singlemembers. As an example, “at least one of: a, b, or c” is intended tocover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination withmultiples of the same element (for example, a-a, a-a-a, a-a-b, a-a-c,a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering ofa, b, and c).

No element, act, or instruction used herein is to be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems, and may be used interchangeably with “one or more.” Furthermore,as used herein, the terms “set” and “group” are intended to include oneor more items (for example, related items, unrelated items, or acombination of related and unrelated items), and may be usedinterchangeably with “one or more.” Where only one item is intended, thephrase “only one” or similar language is used. Also, as used herein, theterms “has,” “have,” “having,” among other examples, or combinationsthereof are intended to be open-ended terms. Further, the phrase “basedon” is intended to mean “based, at least in part, on” unless explicitlystated otherwise.

What is claimed is:
 1. A method of wireless communication performed by auser equipment (UE), comprising: receiving single downlink controlinformation (DCI) that indicates resources for a plurality oftransmission configuration indicator (TCI) states for transmitting orreceiving communications in a plurality of transmission time intervals(TTIs), wherein the single DCI indicates different frequency domainresource assignments of the resources for a first TCI state and a secondTCI state of the plurality of TCI states; and transmitting or receivingthe communications in the plurality of TTIs in accordance with thesingle DCI.
 2. The method of claim 1, wherein first frequency domainresource assignments of the resources for the first TCI state do notoverlap with second frequency domain resource assignments of theresources for the second TCI state.
 3. The method of claim 1, whereinthe single DCI indicates a common set of time domain resourceassignments for the first TCI state and the second TCI state.
 4. Themethod of claim 1, wherein the single DCI indicates different timedomain resource assignments for the first TCI state and the second TCIstate.
 5. The method of claim 1, wherein the communications are timedivision multiplexed (TDM) over the plurality of TTIs.
 6. The method ofclaim 1, wherein the communications are frequency division multiplexed(FDM) over the plurality of TTIs.
 7. The method of claim 1, wherein theresources are physical downlink shared channel (PDSCH) resources.
 8. Themethod of claim 1, further comprising: transmitting informationindicating that the UE is enabled to concurrently communicate usingmultiple TCI states.
 9. A user equipment (UE) for wirelesscommunication, comprising: at least one memory; and at least oneprocessor communicatively coupled with the at least one memory, the atleast one processor operable to cause the UE to: receive single downlinkcontrol information (DCI) that indicates resources for a plurality oftransmission configuration indicator (TCI) states for transmitting orreceiving communications in a plurality of transmission time intervals(TTIs), wherein the single DCI indicates different frequency domainresource assignments of the resources for a first TCI state and a secondTCI state of the plurality of TCI states; and transmit or receive thecommunications in the plurality of TTIs in accordance with the singleDCI.
 10. The UE of claim 9, wherein first frequency domain resourceassignments of the resources for the first TCI state do not overlap withsecond frequency domain resource assignments of the resources for thesecond TCI state.
 11. The UE of claim 9, wherein the single DCIindicates a common set of time domain resource assignments for the firstTCI state and the second TCI state.
 12. The UE of claim 9, wherein thesingle DCI indicates different time domain resource assignments for thefirst TCI state and the second TCI state.
 13. The UE of claim 9, whereinthe communications are time division multiplexed (TDM) over theplurality of TTIs.
 14. The UE of claim 9, wherein the communications arefrequency division multiplexed (FDM) over the plurality of TTIs.
 15. TheUE of claim 9, wherein the resources are physical downlink sharedchannel (PDSCH) resources.
 16. The UE of claim 9, wherein the at leastone processor is further operable to cause the UE to: transmitinformation indicating that the UE is enabled to concurrentlycommunicate using multiple TCI states.
 17. A method of wirelesscommunication performed by a network entity, comprising: determining,for a user equipment (UE), resources for a plurality of transmissionconfiguration indicator (TCI) states for transmitting or receivingcommunications in a plurality of transmission time intervals (TTIs); andtransmitting, to the UE, single downlink control information (DCI) thatindicates the resources for the plurality of TCI states, wherein thesingle DCI indicates different frequency domain resource assignments ofthe resources for a first TCI state and a second TCI state of theplurality of TCI states.
 18. The method of claim 17, wherein firstfrequency domain resource assignments of the resources for the first TCIstate do not overlap with second frequency domain resource assignmentsof the resources for the second TCI state.
 19. The method of claim 17,wherein the single DCI indicates a common set of time domain resourceassignments for the first TCI state and the second TCI state.
 20. Themethod of claim 17, wherein the single DCI indicates different timedomain resource assignments for the first TCI state and the second TCIstate.
 21. The method of claim 17, wherein the communications are timedivision multiplexed (TDM) over the plurality of TTIs.
 22. The method ofclaim 17, wherein the communications are frequency division multiplexed(FDM) over the plurality of TTIs.
 23. The method of claim 17, whereinthe resources are physical downlink shared channel (PDSCH) resources.24. The method of claim 17, further comprising: receiving informationindicating that the UE is enabled to concurrently communicate usingmultiple TCI states.
 25. A network entity for wireless communication,comprising: at least one memory; and at least one processorcommunicatively coupled with the at least one memory, the at least oneprocessor operable to cause the network entity to: determine, for a userequipment (UE), resources for a plurality of transmission configurationindicator (TCI) states for transmitting or receiving communications in aplurality of transmission time intervals (TTIs); and transmit, to theUE, single downlink control information (DCI) that indicates theresources for the plurality of TCI states, wherein the single DCIindicates different frequency domain resource assignments of theresources for a first TCI state and a second TCI state of the pluralityof TCI states.
 26. The network entity of claim 25, wherein firstfrequency domain resource assignments of the resources for the first TCIstate do not overlap with second frequency domain resource assignmentsof the resources for the second TCI state.
 27. The network entity ofclaim 25, wherein the single DCI indicates a common set of time domainresource assignments for the first TCI state and the second TCI state.28. The network entity of claim 25, wherein the single DCI indicatesdifferent time domain resource assignments for the first TCI state andthe second TCI state.
 29. The network entity of claim 25, wherein thecommunications are frequency division multiplexed (FDM) over theplurality of TTIs.
 30. The network entity of claim 25, wherein theresources are physical downlink shared channel (PDSCH) resources.